No, David!, is a very simple book about a young boy who is constantly being told no. He does a different thing on every page to get told no about. But at the end of the book he is assured by his mother that she still loves him. I would use this book at the beginning of the year. Children will indefinitely get in trouble, but as their teacher I will always love them. It will be a pleasant and funny reminder that teachers must reprimand and correct their students because they care.